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OS signal 11 (segmentation violation) error

Kursi

Hi,

 I got the following stack trace error in the elaboration phase, on running a test case with Intelligen.

 *** Error: OS signal 11 (segmentation violation) received 

 The user view stack trace in the specman.elog file shows the following content:

 ***** User View stack trace:

( 0x0)  elaboration
( 0x1)  pre specman run
( 0x2)  specman

*** No user modules are compiled

But all the files that I have loaded have compiled properly.

Could anyone say what this error is all about and how to overcome it???

Regards,

Kursi

 

  • Hi Kursi.

    It sounds like there may be a bug in some of the e code that's being run.
    If you try to access a struct or unit that's null, then compiled Specman code will crash.
    This happens becasue the compiler optimises for performance and doesn't add null struct checks into the compiled code.

    Try either:

    1. Load your e code instead of compiling it, then type "break on error" before issuing the test command.

    2.  When compiling your ecode, add "-debug" to the sn_compile.sh command. This turns on the null struct checks, so gives you a useful message instead of a crash.

    Let us know if that solves the problem.
    For urgent support, you should always try http://support.cadence.com/ first, as often the system can offer a solution right away.

     

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